Right now there aren't a lot of matcher nodes on WAVES because the project is still very early in development. As it starts to integrate more fiat and cryptocurrency trading pairs and the volume rises there should be a correlating increase in both leasing and matcher nodes. I wish that I could provide more info about some of the other exchanges I mentioned but their volume is just too low. I don't care who wins so long as we eventually get high-volume/low-spread decentralized exchange where some bullshit like Mt. Gox can never happen.